I found this guy the other day, he had more stuff up from Craftpix but thankfully it was removed. The rest of what he has is under CC0 license so there's not much legally that can be done, but the fact is that it is despicable nonetheless. Just be aware that this type of thing does happen and art or games on Itch may not be guaranteed to belong to the seller.
This is the Itch user https://gr33nb3nt.itch.io/
This is where I located some of "their" assets.